Just looked on the engine invoice for my sapphire which has a Grp A cylinder head fitted but was secondhand from a touring car, it was built by Graham Goode Racing & was £1500 supplied secondhand & that was 9 yrs ago when it was built,total engine build was £11k including remove/refit & breather kit & other pipes etc but still going strong 9 yrs later. Previous owner paid, not me

Simon.